Events on the Day of Judgment

Blowing of the Horn

Before the last bay begins, angel Israfil will blow out a horn marking the start of the qiyamate. All living beings will die on listening to the sound of the horn. Horn will be blown second time and all living beings will come to life again waiting to be judged for their actions.

Good Deeds vs. Bad Deeds

No deed either small or big will go wasted. Every deed will be counted. The Qur'an also states that even the smallest acts of the believers will not be wasted.

"Anyone who has an atom's worth of goodness will see it and anyone who has done an atom's worth of evil will also see it" (Qur'an 99:7-8). Those who do good if they are Muslims, will be rewarded not only in this world but also in the world hereafter. However, the final Judgment is up to God himself” [Qur'an 2:62]

The Gathering and duration

Alameen (humankind, the Jinn, and all other living beings) will be gathered upon a vast, white, featureless ground, under intense heat of the Sun overhead. They will be naked, uncircumcised and crowded together to the point where some are submerged in their own sweat, as in the beginning of creation. The degree to which one is submerged in sweat depends on the extent of one's piety and goodness. The faces of the believers will be nadirah (shining and radiant). On the other hand, the faces of disbelievers will be basirah (dark, sad and frowning). Qiyamah will last for 50,000 years.

Rejection of False Gods

Idols will assert that only Allah is Lord, and that they were wrongfully worshipped. The Qur'an and Hadith state that Jesus returns and denies he claimed he is God (Qur'an 43.61).

Al-Kawthar

Believers will be lead by Prophet Muhammad (PBUH) to the lake-fount called as Kawthar. Who so ever drinks it will never be thirsty again.

Redemption

In one Hadith, it is related that after the Intercession of Muhammad ﷺ, Allah Himself intercedes, repeatedly ordering His angels to fetch out of Jahannam (hell) any who sincerely professed the Shahada (Sahih Bukhari) until the angels are ordered to return and find anyone with even an atom's measure of goodness in his or her heart. Those who have worshipped false gods, or have participated in shirk (idol worship) are not rescued from Jahannam (hell) and instead remain there forever. After the Intercession, life resumes, either in Jannah (paradise) or in Jahannam (hell).

Deeds to be performed in the First Ten Days of Dhul-Hajjah

Imam Ahmad narrated from Ibn Umar, from the Prophet Muhammad (PBUH) that he said: "There aren't any days greater, nor any days in which deeds done in them are more beloved to Allah Most High, than these ten days (of Dhul-Hijjah). So, increase in them the saying of Tahleel (Laa-ilaaha-ill-Allah), and Takbeer (Allahu-Akbar) and Tahmeed (al-hamdu-lillaah)." 

The deeds that should be performed in the first ten days of Dhul-Hajjah are:

Hajj and Umra: The performance of hajj and umrah are the best deeds that must be performed during these days because the Prophet Muhammad (saw) informs about these deeds as:

"Performance of Umrah is an expiation of the sins committed between it and the previous Umrah, and the reward of the Hajj which is accepted by Allah Most High is nothing but Paradise." (Bukhari)

Fasting:  Fasting in the ten days and especially on the day of Arafah is of great significance. Fasting is done for the sake of Allah and He alone would give his reward. Muslim narrated from Abu Qutaadah that the Prophet (PBUH) said: "Fasting the Day of Arafah will be credited with Allah by forgiving one's sins of the previous year and the following year." 

At-Takbeer and Adh-Dhikr: The starting hadith outlines the importance of increasing the zikr in these days. At-Takbeer (saying: Allah-Akbar) and adh-Dhikr (remembrance of Allah, the Most High) in these (ten) days, because of the saying of Allah in Soorah al-Hajj verse 28: "...And mention the name of Allah on the appointed Days..." 

Repentance: Repenting for the sins committed in the past and asking for forgiveness from Allah.

Deeds: Doing a lot of voluntary (Nafl) worship such as prayer, charity, jihad, reciting Quran, staying away from evil etc, and the reward of these deeds id multiplied several times their reward during these days of dhuul-hajj.

Sacrifice: The slaughtering of a sacrificial animal (Adhiyyah) is also legislated for the Day of Sacrifice (10th) and the Days of Tashreeq (11th, 12th and 13th). This is the Sunnah of our father Ibrahim (May Allah be pleased with him) - from when Allah, the Most High redeemed his son by the great sacrifice (of an animal in his place).

Eid: Performing the eid prayer and celebrating eid.